Reland "Move app/win/* files to base/win/, ui/base/win and chrome/common/ directories."

The issue with the r90464 was that in the win shared build we build dlls and we
need BASE_API to export functions and symbols.

BUG=72317
TEST=None

TBR=rsesek@chromium.org,brettw@chromium.org

Review URL: http://codereview.chromium.org/7263009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@90505 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 49 insertions, 0 deletions

diff --git a/chrome/common/scoped_co_mem.h b/chrome/common/scoped_co_mem.h
new file mode 100644
index 0000000..33d6cc4
--- /dev/null
+++ b/chrome/common/scoped_co_mem.h
@@ -0,0 +1,49 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_COMMON_SCOPED_CO_MEM_H_
+#define CHROME_COMMON_SCOPED_CO_MEM_H_
+#pragma once
+
+#include <objbase.h>
+
+#include "base/basictypes.h"
+
+namespace chrome {
+namespace common {
+
+// Simple scoped memory releaser class for COM allocated memory.
+// Example:
+//   chrome::common::ScopedCoMem<ITEMIDLIST> file_item;
+//   SHGetSomeInfo(&file_item, ...);
+//   ...
+//   return;  <-- memory released
+template<typename T>
+class ScopedCoMem {
+ public:
+  explicit ScopedCoMem() : mem_ptr_(NULL) {}
+
+  ~ScopedCoMem() {
+    if (mem_ptr_)
+      CoTaskMemFree(mem_ptr_);
+  }
+
+  T** operator&() {  // NOLINT
+    return &mem_ptr_;
+  }
+
+  operator T*() {
+    return mem_ptr_;
+  }
+
+ private:
+  T* mem_ptr_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedCoMem);
+};
+
+}  // namespace common
+}  // namespace chrome
+
+#endif  // CHROME_COMMON_SCOPED_CO_MEM_H_